The point is at the heart of the political debate and of the economic policy as the decline of the French industry, despite all the measures taken for more than ten years, seems more and more obvious. But to appreciate its extent, we must not take the wrong indicator. The most frequently quoted is the continuous diminution of the industry value-added share in the GDP. But it is not the most convincing because this relative fall may also come from a stronger growth of the other sectors of activity, especially in the services with the development of tourism or of ...